Green Line ride a bitch due to stupid dead switch

The MBTA reports delays on the Riverside Line due to "a switch problem" at Riverside. But that's not all. Phil R reports what he saw at Reservoir:

Another snowy day, another one of those new, state of the art IB #MBTA #GreenLine trains was just taken out of service at Reservoir. Complete with the sign showing "Call Police" when we passed it on my train.